In the recent epidemic outbreak, to the hospital for companionship partners, doctors usually request a nucleic acid test, but sometimes it happens to be stuck in the meal time, and hungry, so a few hours before the nucleic acid test can not eat?

How many hours before the nucleic acid test should I not eat?

It is generally recommended not to eat two hours before the test. Unlike blood tests and liver and kidney tests, which can be affected by eating, nucleic acid testing is a test for viral nucleic acids in the patient's body, and eating does not affect the specific nucleic acids of the virus.

But at present, the new coronavirus nucleic acid test, clinically most take the throat swab test method, especially the oropharyngeal swab-based, need to take secretions at the back wall of the patient's throat and tonsils, the operation lasts about 15 seconds, which will stimulate the patient's throat nausea, vomiting symptoms, so about 2 hours before the new coronavirus nucleic acid test, if eating and drinking too much, too full, it is easy to appear Therefore, if you eat and drink too much water about 2 hours before the nucleic acid test, you will easily experience nausea and vomiting, which will affect the sampling and laboratory results.

In addition, if the patient has to undergo other tests in addition to the nucleic acid test and needs to fast, it is recommended not to eat or drink from 10 pm the night before to avoid affecting the accuracy of the results.

Is the nucleic acid test oral or nasal?

The results of the new coronary nucleic acid test depend on the region, the medical institution and the ability to perform the test, but basically the results can be ready in about eight hours.

Because the new coronary test involves the collection of specimens, after the collection of the centralized transport to the laboratory for examination, and finally the results and reports. Some of them may also appear suspicious weak positive, this time to retest the specimen, so if this happens, relatively longer, but of course, with the improvement of all aspects of the efficiency of the sex test, the new crown test time has also been shortened, there are some more critical, the need for emergency surgery, for a single specimen fast results, may also be within 3 to 4 hours to produce results, need It is necessary to treat the specific situation.

Is it normal to have a negative or positive nucleic acid test?

A normal nucleic acid test is a negative test.

If it is positive, it means that a new coronavirus infection is present. The nucleic acid test is a specific test for the diagnosis of neocoronavirus pneumonia. If a patient has been infected with neocoronavirus, there will be a large amount of neocoronavirus in the throat, and the throat swab sample obtained by the nucleic acid test will contain neocoronavirus, and the test result will naturally be positive. If there is no neo-coronavirus, no nucleic acid will be detected, and the test result will be negative.

However, multiple negative nucleic acid tests cannot safely exclude the possibility of infection with the new coronavirus, because false negatives may occur, and the accuracy of the results is easily affected by a variety of factors such as sampling, transportation, and testing reagents.